Mouse Controls
Several basic surface and volume viewing and navigation functions are controlled with the mouse and are only active when the mouse cursor is within the Viewing Area.

- Rotate: hold down the left mouse button and move the mouse back and forth and up and down. Note that the rotation function is not active in Volume View. In volume view, zooming sequences through the slices for the selected axis. All other mouse controls are active in all views.

- Z oom: press the Command/Ctrl key + the left mouse button and move the mouse up and down. If you have a mouse wheel, you can also scroll up to zoom out or scroll down to zoom in.

- P an: (move the brain surface to a different part of the Viewing Area), press the shift key + the left mouse button and move the mouse left, right, up, or down.

- ID: To identify a brainordinate, click on the brain surface or volume slice. A sphere will appear where the surface was clicked. Also, the Information window will pop up, showing information on the particular vertex/voxel that was clicked.

- The color and size of the ID sphere can be adjusted using the Properties button in the Information window.

- Reclicking on the sphere deselects that brainordinate and the sphere will disappear.

- Right clicking on a surface or volume slice, brings up a menu of options depending on what is loaded (see images).

- Right clicking in the Viewing Area, but not on a surface or volume, pops up the single option to Remove All Vertex Identification Symbols.